1312030243 has 2 divisors, whose sum is σ = 1312030244. Its totient is φ = 1312030242.

The previous prime is 1312030201. The next prime is 1312030261. The reversal of 1312030243 is 3420302131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1312030243 - 2²⁹ = 775159331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312030243.

It is not a weakly prime, because it can be changed into another prime (1312030843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656015121 + 656015122.

It is an arithmetic number, because the mean of its divisors is an integer number (656015122).

Almost surely, 2^1312030243 is an apocalyptic number.

1312030243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312030243 is an equidigital number, since it uses as much as digits as its factorization.

1312030243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1312030243 is about 36221.9580227243. The cubic root of 1312030243 is about 1094.7491465424.

Adding to 1312030243 its reverse (3420302131), we get a palindrome (4732332374).

The spelling of 1312030243 in words is "one billion, three hundred twelve million, thirty thousand, two hundred forty-three".